These amounts should be entered as Donation receipts. This can be done by clicking the T-slips button on the bottom of the screen. When the window opens, click the Receipts header in the left column.

You can also access this by clicking the Forms icon in the blue bar at the top of the screen. Type "donation" into the search field and choose Charitable donations from the list. I've included a screenshot of the option to select.

Once you've entered your donations, they will populate in page 3 automatically.